Recent prefix assignments

341 prefixes assigned in the last 30 days · from the daily NANPA CO code file, 09/26/2026

Full prefixes (NXX) Thousands-blocks (1,000-number pools)

The Code holder is who opened each NPA-NXX prefix — not necessarily who holds the numbers. A prefix is 10,000 numbers, but under pooling its ten 1,000-number blocks are handed out individually, often to different carriers; the code holder may hold only one block, or none. The Thousands-blocks column shows how the ten blocks are really split — click which blocks → to see who holds each 1,000-number block and its last-4-digit range. Assignments are initial assignments; the current serving carrier may differ due to portability.

Most active assignees, last 30 days

8X8, INC. 43

NEW CINGULAR WIRELESS PCS, LLC - DC 26

Rogers Communications Canada Inc. (Wireless) 23

NEW CINGULAR WIRELESS PCS, LLC - IL 22

ONVOY, LLC - CA 21

New assignments by month Sep 2026 Aug 2026 Jul 2026 Jun 2026 May 2026 Apr 2026 Mar 2026 Feb 2026 Jan 2026 Dec 2025 Nov 2025 Oct 2025

Recent NPA-NXX prefix assignments
Assigned	NPA-NXX	Thousands-blocks taken (last-4 opening)	Code holder	OCN	Rate center	State
2022-03-14	458-287	0–9 XXXall 10 · 3 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OR	5820	PRINEVILLE	OR
2022-03-14	463-272	0–9 XXXall 10 · 4 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IN	6725	CICERO	IN
2022-03-14	463-273	0–9 XXXall 10 · 4 holders which blocks →	LEVEL 3 COMMUNICATIONS, LLC - IN	4803	CARMEL	IN
2022-03-14	464-646	0–9 XXXall 10 · 4 holders which blocks →	TON80 COMMUNICATIONS, LLC	516J	PALOS PARK	IL
2022-03-14	515-464	0XXX4XXX5XXX6XXX · 4 holders which blocks →	TON80 COMMUNICATIONS, LLC	516J	MCCALLSBG	IA
2022-03-14	515-788	1XXX3XXX4XXX8XXX9XXX · 4 holders which blocks →	TON80 COMMUNICATIONS, LLC	516J	PERRY	IA
2022-03-14	518-920	0–9 XXXall 10 · 5 holders which blocks →	COMMIO, LLC	939H	GLENSFALLS	NY
2022-03-14	530-969	0XXX1XXX2XXX3XXX4XXX6XXX8XXX9XXX · 2 holders which blocks →	TON80 COMMUNICATIONS, LLC	516J	NTAH BCWY	CA
2022-03-14	574-381	0–9 XXXall 10 · 5 holders which blocks →	PAETEC ITEL, LLC	829J	SOUTH BEND	IN
2022-03-14	585-618	0–9 XXXall 10 · 2 holders which blocks →	COMMIO, LLC	939H	FAIRPORT	NY
2022-03-14	607-415	0–9 XXXall 10 · 2 holders which blocks →	COMMIO, LLC	939H	CORNING	NY
2022-03-14	641-668	4XXX6XXX8XXX · 3 holders which blocks →	TON80 COMMUNICATIONS, LLC	516J	BUSSEY	IA
2022-03-14	667-827	0–9 XXXall 10 · 4 holders which blocks →	TON80 COMMUNICATIONS, LLC	516J	BERLIN	MD
2022-03-14	716-612	0–9 XXXall 10 · 4 holders which blocks →	COMMIO, LLC	939H	WILLIAMSVL	NY
2022-03-14	726-219	0–9 XXXwhole prefix which blocks →	T-MOBILE USA, INC.	6529	SANANTONIO	TX
2022-03-14	726-220	0–9 XXXall 10 · 3 holders which blocks →	T-MOBILE USA, INC.	6529	SANANTONIO	TX
2022-03-14	726-221	0–9 XXXall 10 · 2 holders which blocks →	T-MOBILE USA, INC.	6529	SANANTONIO	TX
2022-03-14	825-863	not yet reported which blocks →	Videotron Ltd.	787G	Calgary	—
2022-03-14	839-267	0–9 XXXall 10 · 2 holders which blocks →	TON80 COMMUNICATIONS, LLC	516J	BARNWELL	SC
2022-03-14	872-299	0–9 XXXall 10 · 4 holders which blocks →	PAETEC ITEL, LLC	829J	CHICGOZN01	IL
2022-03-14	901-665	0XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX which blocks →	ONVOY, LLC - TN	525E	MEMPHIS	TN
2022-03-14	938-665	0–9 XXXall 10 · 6 holders which blocks →	TON80 COMMUNICATIONS, LLC	516J	TALLADEGA	AL
2022-03-14	979-783	0XXX1XXX2XXX6XXX9XXX · 4 holders which blocks →	TON80 COMMUNICATIONS, LLC	516J	EAGLE LAKE	TX
2022-03-11	331-284	0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX9XXX · 4 holders which blocks →	T-MOBILE USA, INC.	6529	BARTLETT	IL
2022-03-11	346-551	0–9 XXXall 10 · 4 holders which blocks →	NEW CINGULAR WIRELESS PCS, LLC - IL	6534	BAMMEL	TX
2022-03-11	438-867	not yet reported which blocks →	TELUS Mobility	8303	Montreal	—
2022-03-11	564-633	2XXX3XXX4XXX · 2 holders which blocks →	TON80 COMMUNICATIONS, LLC	516J	WINLOCK	WA
2022-03-11	564-665	4XXX5XXX · 2 holders which blocks →	TON80 COMMUNICATIONS, LLC	516J	OCOSTA	WA
2022-03-11	657-571	0–9 XXXall 10 · 4 holders which blocks →	BANDWIDTH.COM CLEC, LLC - CA	981E	YORBALINDA	CA
2022-03-11	873-945	not yet reported which blocks →	TELUS Quebec	2243	Cookshire	—
2022-03-11	873-946	not yet reported which blocks →	TELUS Quebec	2243	East Angus	—
2022-03-11	873-947	not yet reported which blocks →	TELUS Quebec	2243	La Patrie	—
2022-03-11	910-403	0–9 XXXall 10 · 4 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NC	6324	LILLINGTON	NC
2022-03-11	916-940	0–9 XXXall 10 · 4 holders which blocks →	T-MOBILE USA, INC.	6529	SCRM NORTH	CA
2022-03-10	209-767	0–9 XXXall 10 · 2 holders which blocks →	T-MOBILE USA, INC.	6529	ATWATER	CA
2022-03-10	209-776	0–9 XXXall 10 · 6 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA	6006	JACKSON	CA
2022-03-10	213-757	0–9 XXXall 10 · 5 holders which blocks →	TELEPORT COMMUNICATIONS AMERICA, LLC - CA	7139	LSAN DA 01	CA
2022-03-10	223-275	0XXX1XXX2XXX3XXX4XXX5XXX6XXX9XXX · 5 holders which blocks →	BANDWIDTH.COM CLEC, LLC - PA	002F	WRIGHTSVL	PA
2022-03-10	231-391	0XXX7XXX8XXX9XXX · 3 holders which blocks →	BANDWIDTH.COM CLEC, LLC - MI	991E	WALLOON LK	MI
2022-03-10	313-900	0–9 XXXall 10 · 3 holders which blocks →	FRACTEL, LLC	965H	DETROITZN5	MI
2022-03-10	314-617	0–9 XXXall 10 · 4 holders which blocks →	PAETEC ITEL, LLC	829J	ST LOUIS	MO
2022-03-10	314-988	0–9 XXXall 10 · 5 holders which blocks →	FRACTEL, LLC	965H	OAKVILLE	MO
2022-03-10	319-733	0XXX1XXX3XXX7XXX · 4 holders which blocks →	TON80 COMMUNICATIONS, LLC	516J	FARMINGTON	IA
2022-03-10	319-997	1XXX7XXX9XXX · 3 holders which blocks →	TON80 COMMUNICATIONS, LLC	516J	NEW LONDON	IA
2022-03-10	368-998	not yet reported which blocks →	TELUS Mobility	8301	Banff	—
2022-03-10	368-999	not yet reported which blocks →	TELUS Mobility	8301	Calgary	—
2022-03-10	417-287	0XXX1XXX2XXX7XXX · 3 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MO	5814	MT VIEW	MO
2022-03-10	470-941	0–9 XXXall 10 · 4 holders which blocks →	TELEPORT COMMUNICATIONS AMERICA, LLC - GA	8392	GAINESVL	GA
2022-03-10	470-943	0–9 XXXall 10 · 3 holders which blocks →	BANDWIDTH.COM CLEC, LLC - GA	983E	CARROLLTON	GA
2022-03-10	505-464	0–9 XXXall 10 · 3 holders which blocks →	T-MOBILE USA, INC.	6529	ALBUQURQUE	NM

Source: NANPA CO Code Assignments (Utilized, All States, Public), file date 09/26/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.